David



@einen 4tutta uttnt @fitta 4DAVID C. RICHARDSON, 0F LAWRENCE, MASSACHUSETTS.

Lenen; Patent No. 74,849, me February' 25, 186s.

4IMPROVLMENr'IN GAE-VENTILATORS.

To ALL WHO'M ITMAY CONCERN:

Be it knoivnlthat IJ DAVID C. RICHARDSON, of Lawrence," in the-county of Essex, and State of Massachusetts, have'inventd new and useful Improvements in Self-AdjustingGar-Ventilatore; and I do hereby declare that the following is a full and exact description thereof, referencebeing hadA to the accompanying drawings,.

and to the letters of reference marked thereonr To enable others skillediu the art to make and use my invention,'I will proceed to describe its construction and operation.

Figurel represents a front elevation of my improved self-adjusting ear-ventilator.

Figure 2 represents a longitudinal section of the same.

Similar letters in the different guresindicate corresponding parts. v

a represents the framework of that part oi' the Scar to which my improvement vis attached; b, theftop weather-plate; ofthe bottom Weather-plate; d and ethe self-adjusting Ventilating-folders, with theirI bearings j', y, Inland z', andconnected by the r-od j witheycs le and Z, or their equivalents,.l'iinging to the same; m, the

knob, =with its shankn, which passes through the step o, and connects with the register-foldspp,l around the'y shank n;v and enclosed in the step o isA a rubber spring, g, which is held and strained tout by aid of the washer und pin, which springlghacts and secures the register-foldsppin any desired position, and also prevents noise from rattling, caused by the vibration oi' the car,` when in mot-ian, and leakage from water'through theistep o.

the register,l whilethe self-acting folders prevent the dust and cinders from entering the car.

The great tendency of cars when in rapid motion, with the ventilatng-windows or registers open, is to gather in and receive the rain tht'mny be falling, or Ythe cinders, dust, and smoke with the fresh air whiehis demanded, to the great annoyance and discomfort ofthe occupants ot' the same'. In Vmy improved self-adjusting ventilator, acting always at its proper time, ivhen thecnr is in motion, and keeping its position until the motion of the car ceases,'thris 'great annoyance is almost entirely remedied.

V The intervening space'b'etween the shafts of the folders elA and e is left open,to allowa free ventilation through The car being in motion, the action otftlle nir comingin cont-net with and directly against the folder d, causes the folder ol to instantly shut, at the same instantgives corresponding motion by aid of the rod j to the folder opening thesnme. `This causes a rapid current of air to pass 'outside und inside of the open foldc e, producing a strong suction from within; this action sucks and throws-out all of the impure ni'rin the car, and replenishes fresh air in its room, at. the same time-,the obnoxious andiobjectionable particles are kept out. The weatherlplntes b and c Vextending from the car sniiiciently lto give the'reolnisitc angle'to the folders d and e, and .their bearingsg, L, and z', also Vserve'i'n preventing the rain'i'rom 'bcating'in through the'openings made by the registerspp. The bottom Aweather-plate c being lower than the seat ot`A the register-foldso'p, and :inclining outward, prevents the Water from-flowing in'. Y' -What Icluim as my invention, and desire to secure by Letters `.i.3'arteuti's-Y l l'.Ihe combination and arrangement of the selfadjusting folders ol e, connected by the rod j, in the openmouthed space between .the weather-plates b c, with the register-plates ppi substantially as und for the purposes herein set forth. I l Y DAVID C.V RICHARDSON.

Witnesses:

GEO'. E. PEVEY, l Cms. W` ABBOTT. 

